Engine Turbocharger/Supercharger Wastegate Position Sensor

The computer expects a specific voltage signal from the wastegate position sensor, which is usually between 0.5V to 4.5V depending on the wastegate position. When the signal is out of range, it triggers this code.

The computer monitors the voltage from the wastegate position sensor during operation. If it detects a voltage lower than 0.5V (fully closed) or higher than 4.5V (fully open) for a certain duration, it flags a fault.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 11. Inspect the wiring and connectors for the wastegate position sensor for damage or corrosion. Decision: If damaged, repair/replace the wiring or connectors. If good, proceed to step 2.
2. 22. Check the signal voltage from the wastegate position sensor with a multimeter. Expected voltage should be between 0.5V and 4.5V. Decision: If voltage is out of range, replace the sensor. If within range, proceed to step 3.
3. 33. Verify the operation of the wastegate actuator by manually operating it, ensuring it moves freely. Decision: If it’s stuck or restricted, repair or replace the actuator. If it moves smoothly, proceed to step 4.
4. 44. Use engine diagnostics to check for additional codes or data regarding turbocharger operation. Decision: If there are related codes, address them accordingly. If none, consider reprogramming the ECM if other checks come back fine.

• Damaged wiring or connectors to the wastegate position sensor
• Faulty wastegate position sensor
• Restricted wastegate actuator operation
• Turbocharger or supercharger malfunction
• ECM software issues

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